Another blow to Solar Valley Germany's once high-flying solar energy sector has suffered yet another blow, with the firm Conergy filing for insolvency, a victim of a global market being flooded with solar energy products, especially low-priced products from China.

A carbon-based future It is almost guaranteed that over the next 50 years most of our energy will still come from carbon-based raw materials. In this respect, there are four important issues to keep in mind.